Method for fabricating liquid crystal panel field of the invention

Abstract

An exemplary method for fabricating a liquid crystal panel includes: providing a first substrate (210); forming a plurality of color resin layers (212) and a black matrix (27) spacing the color resin layers on the first substrate; forming a plurality of compressible photo spacers (24) on the black matrix, the photo spacers comprising a plurality of photo spacers having a first length and a plurality of photo spacers having a second length different from the first length, wherein the first length and the second length are measured perpendicular to the first substrate; providing a second substrate; coating a sealant along an outer periphery of the second substrate, whereby the second substrate and the sealant cooperatively defining a space; dropping liquid crystal on the second substrate in the space; placing the first substrate onto the second substrate and pressing the first substrate; and curing the sealant.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart summarizing a method for fabricating a liquid crystal panel according to a first embodiment of the present invention.

FIG. 2 is a simplified, plan view relating to steps of providing a first substrate, and forming a plurality of color resin layers, a black matrix and a plurality of photo spacers on the first substrate according to the method of FIG. 1.

FIG. 3 is a cross-sectional view taken along line III-III of FIG. 2.

FIG. 4 is a simplified, plan view of an alternative structure of the first substrate of FIG. 2.

FIG. 5 is a flowchart summarizing a method for fabricating a liquid crystal panel according to a second embodiment of the present invention.

FIG. 6 is a simplified, plan view relating to steps of providing a first substrate, and forming a black matrix, a plurality of color resin layers and a plurality of photo spacers on the first substrate according to the method of FIG. 5.

FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 6.

FIG. 8 is a simplified, plan view of an alternative structure of the first substrate of FIG. 6.

FIG. 9 is a flowchart summarizing a conventional method for fabricating a liquid crystal panel.

FIG. 10 is a simplified, plan view relating to steps of providing a first substrate, and forming a black matrix, a plurality of color resin layers and a plurality of photo spacers on the first substrate according to the method of FIG. 9.

Claims

1. A method for fabricating a liquid crystal panel, the method comprising: providing a first substrate;forming a plurality of color resin layers and a black matrix spacing the color resin layers on the first substrate;forming a plurality of compressible photo spacers on the black matrix, the photo spacers comprising a plurality of photo spacers having a first length and a plurality of photo spacers having a second length different from the first length, wherein the first length and the second length are measured perpendicular to the first substrate;providing a second substrate;coating a sealant along an outer periphery of the second substrate, whereby the second substrate and the sealant cooperatively defining a space;dropping liquid crystal on the second substrate in the space;placing the first substrate onto the second substrate and pressing the first substrate; andcuring the sealant.

2. The method as claimed in claim 1, wherein the difference between the first length and the second length of the photo spacers is in the range from 0.2˜5 millimeters.

3. The method as claimed in claim 2, wherein the height difference is approximately equal to 3 millimeters.

4. The method as claimed in claim 1, wherein after the first substrate is pressed, all the photo spacers have substantially the same length.

5. The method as claimed in claim 1, wherein the color resin layers comprise red resin layers, green resin layers, and blue resin layers.

6. The method as claimed in claim 5, wherein each of photo spacers is disposed between two color resin layers having a same color.

7. The method as claimed in claim 5, wherein each of the photo spacers is disposed between two color resin layers having different colors.

8. The method as claimed in claim 1, wherein curing the sealant comprises using ultraviolet light to irradiate the sealant.

9. A method for fabricating a liquid crystal panel, the method comprising: providing a first substrate;forming a black matrix on the first substrate, a plurality of space areas being defined at the black matrix;forming a plurality of color resin layers on the space areas and on parts of the black matrix;forming a plurality of compressible first photo spacers on the black matrix and a plurality of compressible second photo spacers on the color resin layers that are formed on the black matrix, wherein a combined dimension of each of the second photo spacers and the corresponding color resin layer is greater than a corresponding length of each of the first photo spacers on the black matrix, the combined dimension of the second photo spacer and the corresponding color resin layer and the corresponding length of the first photo spacer being measured perpendicular to the first substrate;providing a second substrate;coating sealant on a periphery of the second substrate, whereby the second substrate and the sealant cooperatively define a space;dropping liquid crystal on the second substrate in the space;placing the first substrate on the second substrate and pressing the first substrate, at least two photo spacers having different decrement; andcuring the sealant.

10. The method as claimed in claim 9, wherein a difference between the combined dimension of the second photo spacer and the corresponding color resin layer and the corresponding length of the first photo spacer is in the range from 0.2˜5 millimeters.

11. The method as claimed in claim 10, wherein the difference between the combined dimension of the second photo spacer and the corresponding color resin layer and the corresponding length of the first photo spacer is equal to approximately 3 millimeters.

12. The method as claimed in claim 9, wherein the first photo spacers and the second photo spacers have the same length.

13. The method as claimed in claim 9, wherein the color resin layers comprise red resin layers, green resin layers, and blue resin layers.

14. The method as claimed in claim 9, wherein each of the second photo spacers is disposed between two color resin layers in the space areas having a same color.

15. The method as claimed in claim 9, wherein each of the second photo spacers is disposed between two color resin layers in the space areas having different colors.

16. The method as claimed in claim 9, wherein curing the sealant comprises using ultraviolet light to irradiate the sealant.

17. An intermediate assembly of a liquid crystal display comprising: a black matrix equipped with a plurality of photo spacers with different heights measured from said matrix on which the photo spacers are located due to either originally different lengths of the photo spacers or some color resin layers being sandwiched between some of said photo spacers and the black matrix so as to result in a non-synchronic compression of said photo spacers between two substrates in a later assembling of a final assembly.